Nickel substitute chrome-plating process

A process and process technology, applied in the field of electroplating process, can solve the problems of unenvironmental protection, inability to electroplate chromium layer metal, and large pollution, and achieve the effect of meeting environmental protection requirements and achieving good hardness and smoothness.

Inactive Publication Date: 2006-05-03
惠州志发五金制品塑料电镀有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of electroplating, the process of replacing nickel (Cu-Sn alloy) is an older process, but because it belongs to cyanide electroplating, it is not environmentally friendly and pollutes a lot
The trivalent environment-friendly chromium plating process is an electroplating process that meets the requirements of environmental protection, but it has been unable to directly electroplate chromium layer metal on the surface of the nickel substitute (Cu-Sn alloy) coating for a long time

Method used

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Examples

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Embodiment Construction

[0033] The following are non-limiting examples of the present invention, and the specific process conditions may vary due to different specific conditions such as climate differences. In general, its concrete steps are as following examples:

[0034] 1. Wax removal ingredients: 9ml / L wax removal water; temperature is 51°C, pressure is normal pressure, Baume degree is 0.8; other conditions: filter rotation speed is above 4 rotations / hour, ultrasonic stirring.

[0035] 2. Degreasing Ingredients: 33g / L degreasing powder; temperature is 51°C, pressure is normal pressure, Baume degree is 0.8; other conditions: the rotation speed of the filter is above 4 rpm, ultrasonic stirring.

[0036] 3. Washing ingredients: sand carbon water; temperature is normal temperature, pressure is normal pressure.

[0037] 4. Hydrophilic ingredients: 210g / L sulfuric acid, 9ml / L surface conditioner; temperature is 51°C, pressure is normal pressure; other conditions: the rotation speed of the filter is m...

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PUM

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Abstract

The substituting nickel coating chrome technique comprises: removing dirt to coat piece surface; roughing, sensitizing, activating and reducing to the coat piece; chemical coating nickel and copper; substituting nickel by trivalent chromium. This invention integrates techniques, overcomes opposite difficulty, and makes the coat layer has well hardness and clean.

Description

technical field [0001] The invention belongs to the field of electroplating technology, in particular to a nickel-substituting chromium plating technology. Background technique [0002] In the field of electroplating, the process of replacing nickel (Cu-Sn alloy) is an old process, but because it belongs to cyanide electroplating, it is not environmentally friendly and pollutes a lot. The trivalent environment-friendly chromium plating process is an electroplating process that meets the requirements of environmental protection, but it has been unable to directly electroplate the chromium layer metal on the surface of the nickel substitute (Cu-Sn alloy) coating for a long time. Contents of the invention [0003] The purpose of the invention is to provide a nickel-substituting chromium plating process. [0004] In order to achieve the above-mentioned purpose requirements, the present invention adopts the following methods to realize: [0005] A nickel-substituting chrome-p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/16C23C18/31
Inventor 唐海
Owner 惠州志发五金制品塑料电镀有限公司
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